I remember getting a bunch of these back in the day, but I can't remember where. It was probably basketball cards, but it may have been NASCAR too. I think it's highly likely they came from repacks, which has always been my favorite way to grow my collection.
VERY slow trading due to health problems. Not transferrable so safe to trade with, just moving is painful and can't always access the cards.
Cardboard History My COMC
New Collection Website: Cardboard History Gallery (Still under construction)
Tips on how to make your scans look like the card does in hand (No more washed out, fuzzy scans!):